Madonna banned photographers from taking pictures of her at a MoMA party Monday night because she “didn’t feel she looked her best,” sources told us. The newly single star sneaked in through a private entrance sporting black Henry Kissinger-like frames, red lipstick and a black blazer which made her look like a hot grad-school teacher. Otherwise, it was “Upstairs, Downstairs” at the party thrown with PS1 and Volkswagen. Madonna, James Franco and A-listers Lou Reed, Patti Smith, Yoko Ono and Marina Abramovic supped on a private balcony while taking in performances by violinist Hahn-Bin and Martha Wainwright. Below, guests invited to the after-party waited and waited for the behind-schedule dinner to wrap. One photographer got fed up and took off. The after-party people chilled in the garden until a downpour began. And Madonna, whose rep didn’t get back to us, must have gone back underground.